A Sentinel's last watch

A guard changer inspects Sgt. John Baker's weapon for the last time, Aug. 31, in Arlington National Cemetery, Va. Baker, Tomb Sentinel, Tomb of the Unknown Soldier, 3d U.S. Infantry Regiment (The Old Guard), conducted his last walk after the inspection. He served 54 months at the Tomb. (U.S. Army photo by Staff Sgt. Megan Garcia)